Alert archive / Wisconsin / Tornado Warnings in 2004

Tornado Warning 12, NWS Milwaukee, WI

June 23, 2004Jefferson County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jun 23, 2004, 9:27 PM CDT for Jefferson County, Walworth County, Wisconsin. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 23, 2004, 9:27 PM CDT (02:27 UTC)
Expired: Jun 23, 2004, 10:00 PM CDT
In force: 33 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

Counties Jefferson County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 17 km from the middle of the area, began a volume at 02:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 5:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.5 hours before the alert went out and 187 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 371 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1067 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

777 
WFUS53 KMKX 240227
TORMKX
WIC055-127-240300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
927 PM CDT WED JUN 23 2004

THE NATIONAL WEATHER SERVICE IN MILWAUKEE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN SOUTHEAST WISCONSIN
  NORTHERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN

* UNTIL 1000 PM CDT

* AT 927 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST
  DANGEROUS PORTION OF THE STORM WAS LOCATED NEAR PALMYRA...OR ABOUT
  7 MILES EAST OF WHITEWATER...MOVING EAST AT 55 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TROY CENTER AT 930 PM CDT.
  POTTER LAKE AT 935 PM CDT.

NIGHTTIME TORNADOES ARE ESPECIALLY DANGEROUS TAKE COVER NOW IF YOU
WAIT UNTIL YOU SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A
SAFE PLACE

LAT...LON 4269 8830 4280 8871 4295 8868 4293 8856
      4292 8854 4285 8854 4284 8853 4284 8831
      4269 8830

$$

REM

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 7:23 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Sauk	52 min
Jun 23, 7:28 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	47 min
Jun 23, 7:45 PM CDT	Tornado Warning	MKX	Iowa, Sauk	30 min
Jun 23, 7:49 PM CDT	Tornado Warning	MKX	Marquette	56 min
Jun 23, 8:05 PM CDT	Tornado Warning	MKX	Dane	55 min
Jun 23, 8:12 PM CDT	Tornado Warning	MKX	Green Lake	33 min
Jun 23, 8:17 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	58 min
Jun 23, 8:31 PM CDT	Tornado Warning	MKX	Dodge, Fond du Lac	59 min
Jun 23, 8:34 PM CDT	Special Marine Warning	MKX		116 min
Jun 23, 8:34 PM CDT	Special Marine Warning	MKX		116 min
Jun 23, 8:34 PM CDT	Special Marine Warning	MKX		116 min
Jun 23, 8:57 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	33 min
Jun 23, 9:09 PM CDT	Severe Thunderstorm Warning	MKX	Ozaukee, Sheboygan, Washington	36 min
Jun 23, 9:18 PM CDT	Tornado Warning	MKX	Washington	27 min
Jun 23, 9:21 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	39 min
Jun 23, 9:35 PM CDT	Tornado Warning	MKX	Ozaukee, Sheboygan	25 min
Jun 23, 9:37 PM CDT	Tornado Warning	MKX	Waukesha	38 min
Jun 23, 9:42 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Racine	48 min
Jun 23, 10:01 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha	29 min
Jun 23, 10:25 PM CDT	Special Marine Warning	MKX		65 min
Jun 23, 10:25 PM CDT	Special Marine Warning	MKX		65 min

Nearby

Tornado Warnings in Wisconsin, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.